Bonding models | Starter Quiz | Oak National Academy

Which type of bonding involves the sharing of pairs of electrons between atoms?

• Ionic bonding

• Covalent bonding

• Metallic bonding

Answer explanation

Covalent bonds form when atoms share electrons.

Which type of bonding occurs between metal atoms, allowing them to conduct electricity?

• Ionic bonding

• Covalent bonding

• Metallic bonding

Answer explanation

In metallic bonding, electrons are free to move throughout the metal lattice, allowing for conductivity.

In ___ bonding, one atom donates electrons to another atom, creating positive and negative ions that attract each other.

Answer explanation

In ionic bonding, the transfer of electrons creates ions that are held together by electrostatic forces.

___ diagrams use crosses and dots to represent the electrons from different atoms. It shows how these electrons are shared to form covalent bonds.

Answer explanation

Dot-and-cross diagrams use dots and crosses to represent the electrons from different atoms. It shows how these electrons are shared to form covalent bonds.

Which of the following substances is most likely to have covalent bonding?

• Sodium chloride (NaCl)

• Magnesium oxide (MgO)

• Methane (CH₄)

• Aluminum (Al)

Answer explanation

Methane is a molecule where carbon and hydrogen atoms share electrons through covalent bonds.

When a metal atom loses electrons, it becomes a ___ charged ion.

Answer explanation

A positively charged ion, or cation, is formed when a metal atom loses electrons.